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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Size-Controlled Synthesis of ZnSnO3 Cubic Crystallites at Low Temperatures and Their HCHO-Sensing Properties
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Size-Controlled Synthesis of ZnSnO3 Cubic Crystallites at Low Temperatures and Their HCHO-Sensing Properties

机译：低温下ZnSnO3立方晶的尺寸控制合成及其HCHO传感性能

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Uniform and monodisperse ZnSnO3 cubic crystallites were prepared via a solution process involving the reaction of zinc sulfate and sodium stannate at a reaction temperature as low as 0 °C without any surfactant. The size was readily controlled from 40 to 600 nm by varying the reaction temperature. The possible formation mechanism of cubic crystallites was attributed to a nucleation assembly process. The as-fabricated sensors based on ZnSnO3 cubic crystallites showed high sensitivity, fast response, and short recovery times toward HCHO gas. And as the particle-size of ZnSnO3 cubic crystallites decrease, the sensitivity of gas sensors based on them increases and the recovery time shorten rapidly. The detectidn limit of ZnSnO3 cubic crystallites sensor can reach as little as lower than one per million for HCHO. The performance of a home-built ZnSnO3 cubic crystallites sensor was even better than the competing SnO2 and In2O3 sensor, making this material interesting for sensor devices.
机译：通过溶液法制备均匀且单分散的ZnSnO3立方微晶，该过程涉及硫酸锌和锡酸钠在低至0°C的反应温度下不使用任何表面活性剂的反应。通过改变反应温度可以容易地将尺寸控制在40至600nm。立方微晶的可能形成机理归因于成核组装过程。基于ZnSnO3立方微晶的预制传感器显示出高灵敏度，快速响应和对HCHO气体的短恢复时间。随着ZnSnO3立方微晶粒径的减小，基于它们的气体传感器的灵敏度增加，恢复时间迅速缩短。 ZnSnO3立方微晶传感器的检出限可低至HCHO的百万分之一。自制的ZnSnO3立方微晶传感器的性能甚至优于竞争的SnO2和In2O3传感器，这使得这种材料对于传感器设备很有趣。

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